Perhaps you should try some spelling variations:
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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("national science series c:, mathematical and medical sciences") OR ("national science stories c:, mathematical and medical sciences"))) OR ("animal science series c:, mathematical and medical sciences")).
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• Adding a wildcard symbol may retrieve word variants: (((("national science series c:, mathematical and medical sciences") OR ("national science stories c:, mathematical and medical sciences"))) or ("animal science series c:, mathematical and medical sciences"))*.